package com.project.filter;

import com.project.utils.JwtUtil;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;
@Component
public class TokenFilter implements GlobalFilter, Ordered {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();

        ServerHttpResponse response = exchange.getResponse();

        if (request.getURI().getPath().contains("login") || request.getURI().getPath().contains("registerByPwd")

        ||request.getURI().getPath().contains("goods")){
            return chain.filter(exchange);
        }

        HttpHeaders headers = request.getHeaders();
        String jwtToken=headers.getFirst("token");
        if (StringUtils.isEmpty(jwtToken)){

            response.setStatusCode(HttpStatus.UNAUTHORIZED);

            return response.setComplete();
        }

        try {

            JwtUtil.parseJWT(jwtToken);

        }catch (Exception e){

            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }

        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return 2;
    }
}
